Corrodible downhole article
US10081853B2 · kind B2 · utility
9Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2018 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Jan 9, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A magnesium alloy is suitable for use as a corrodible downhole article, wherein the alloy includes: (a) 11-15 wt % Y, (b) 0.5-5 wt % in total of rare earth metals other than Y, (c) 0-1 wt % Zr, (d) 0.1-5 wt % Ni, and (e) at least 70 wt % Mg. It has been surprisingly found by the inventors that by increasing the Y content of the alloy to the range specified above, increased age hardening response and hence increased 0.2% proof stress can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.